A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 6145-01-183-8570
NSN 6150-01-331-9860
NSN 6145-01-171-5977
NSN 5965-01-260-2547
NSN 5975-00-553-5531
NSN 2925-01-194-9737
NSN 5985-01-484-6955
NSN 5935-00-071-7705
NSN 5945-00-262-0888
NSN 6610-01-140-8163
NSN 5990-01-568-5565
NSN 5920-01-244-4987